Apparatus for preparing tinned sheet-iron boxes, &amp;c., for detinning.



H. GOLDSGHMIDT.

APPARATUS FOR PREPARING TINNED SHEET IRON BOXES, &o., FOR DETINNING.

APPLICATION FILED JAILZZ, 1907. 1,75,?81. Patented 001;. 14, 1913.

2 SHEETS-SHEET 2.

$2M /Z;/Q) m mQbNL ZMZZ gdw I ig/077 sra'rns repress" curios,

miirsdornscnivrmr, or nssnn-ozu-rnn-nunn, GERMANY, nssrenon, BY MESNE AS- I SIGNMENTS, T GOLDSCHMID-T DETINNING COMPANY, or JERSEY CITY, NEW

JERSEY, A CORPORATION or NEW "103K.

I API'AB TIJ'SIOR PREPARING TINN ED SHEET-IRON BOXES, &c., FOR DETINNING.

Lees-ee Specification of Letters Iatent.

Patented Oct. 1%, 1913..

application filed January 22, 190;. Serial. No. 353,535.

' .of'which' the following'is a specificao 7 a u a My present nvention 1s in the nature of enim rouement upon thatshorvn, described a and c aimed in Letters Patent No. 80d 530,

I paring-sheet-iron boxes, etc.., for detinn granted to gm'e November-1 1, 1905., wrich patent. relates to .a similar method of pren In practice it has been found that when fa method and apparatus such as set forth in said patent are used, only a certain size 7 boxes or other material can be properly treated and fed in a regular manner between the rollers by which the boxes are to be compressed, the size of the boxes, etc,

.' proportionate .to the width ,o f'the pass between the rollers. When boxes of too large a size are fed to the rollers they are not properly presentedand are not fed .at

once .mto the pass between the rollers, but

-, rollahout in front of the ass, sometimes for a considerable length 0 time, before they arecaught and positively fed into .thepass by the projecting perforators with which the rollers are equipped. Constant attention on the part .of the workman charge of the machine is required when boxes of sexcessive size are fed .into a machine of the type illustrated in my .prior patent.

'T-he principal object of my present invention is to improve the a .paratus disclosed in said prior patent or preparing boxes for detinning, and in doing so I have foundit necessary to divide thecompressing function into two distinct parts, and I pref- .wlierefthey are fully con pressed.

4 fi0 r2e r l -a a w l as erably divide .each of the two main functions, that is,'both ithe compressing and perforating, into two distinct parts. To divide the compressing function into ;two .main

parts I provide an additional pair ,of co npressing rollers, which operate :upon the tinned boxes, etc, and compress the sarne partial-1y before such partially compressed boxes .are fed to ,the second zpair f rollers, Th kfi s second, may have perforators projecting from the surfaces thereof when it is desired to divide the perforating functions also into two distinct parts, as is preferably the case.

The first pair of rollers are advantageously 'oflaggcr diameter than the second pair of rollers, and the second pair of rollers Will usually be disposed below the first pair and will receive the partially compressed tinboxes, etc, ,directly therefrom; The .tWo

pairs of rollers may be rotated by any suitable means, as for example, by a train of gearing driven from .a suitable source of. power. The same apparatus should be capable of treating both large and small. sizes of boxes, and in order to permit this the width of the pass between the first pair of rollers should be capable of adjustment to accommodate boxes of different sizes. This adjustment may be obtained by mountlng one of the rollers of the first pair in such a manner that it may be adjusted toward and from the other and securely held in place in any desired adjusted position, this adjustment being usually in a horizontal plane. In this Way the pass between the first or 'upper ,pair of rollers into which boxes are fed in any suitable manner, is increased or decreased in Width to correspond to the size of the boxes to be compressed, and thus the shifting and rolling about of the boxes at he entrance of the pass is prevented, and each box is properly caught between the rollers and compressed as soon as it is pre- Sented at the pass. After the first partial compression, and also partial perforat on, when the rollers of the first pair are provided. with perforators, the flattened partially compressed and perforated boxes are delivered to the lower pair of rollers by which said boxes are fully compressed and completely perforated. Suitable means are In the drawings, Figure l is a front elevation,.partly in transverse section, the section heingtaken in the line (l -D, 2, w th the inotor removed; Fig. 2 1s a side elevation and .longtiud-inal section .of the same, the "etio being taken in line A,B, F1 g. -1; 3 audit are details i ta specific type of perforator preferably employed for punc motor, from which pulley movement is trans:

mitted by a belt 3 ,to a driven pulley, such as 4, here shown as of large size. The rotary movement of this driven pulley may be transmitted by means of a train of gearing, such as 5, to the two pairs of rollers which operate upon the material. The rollers ofthe first or upper pair are designated respectively by 6 and 7, and those of the second and lower pair are designated respectively by 8 and 9. The comparative sizes of the rollers of the first and second pairs should be such that the material will be operated uponat the first stage of the operation by surfaces traveling at a slower speed than during the second stage of the operation. For this reason the rollers of the first or upper pair are of larger diameter than those of the lower pair, and the surfaces thereof move at a lower circumferential speed than the surfaces of the rollers of the lower pair.

The two pairs of rollers may be mounted in a frame structure of any suitable type, such for example as that illustrated at 10. The rollers themselves are intended not only to compress the material but also to perforate the same, and both pairs of rollers are preferably provided with suitable per forators for puncturing the boxes. I prefer to use a type of perforator such as shown in detail in Figs. 3 and 4:, the body portion of such perforator being pyramidal, as shown at 12. These perforators project from the surfaces of the rollers and cover substantially the whole of the surface of each roller to which they are applied. The perforators' will usually be arran "ed in regular rows both lengthwise and circiunferentially of the rollers. Pea-iterators of this construction readily puncture the boxes and other material prcsei'ited to them and enlarge the small openings first fori'iied by them with the expenditure' of a minimum amount of power and without entirely separating any part of the material from the body of the box. The sharp points of these perforators also serve to catch the boxes the moment the boxes are presented to the rollers, and to, feed the same positively into the pass between adjacent rollers.

lt'will be noticed that the perforators of the first or upper pair of rollers are of rela tively large size as compared with those carried by the lower pair of rollers and are also disposed somewhatfarther apart than those of the lower rollers. this is to effect a coarse preliminary puncturing of the material as well as a partial The object of nwaeei compressing by the rollers of the upper pair, after which the completecompression of the material will be effected by the rollers of the lower pair, and at the same time the perforators carried by the lower rollers will thoroughly puncture the boxes, etc., at a larger number of points than the perforators of the upper rollers. Thus when the treatmentis complete the material will be in such a condition that the chemicalsused in the subsequent detinning process will have free access to all parts of such material.

As before stated, an important feature of the invention relates to the adjustment of the width-of the pass between the first pair of rollers. The adjustment of this pass is in this case effected by shifting the roller 6' to any one of a number of positions hori- Zontally relatively to the cooperating roller 7. This roller 6 is so mounted that it can be shifted readily horizontally on the upper framepiece of the frame 10. Theupper frame-piece is here shown as having a series of holes passing therethrough, through which bolts, such as 13, carried by the hearingor pillow-block for the shaft of the roller 6 may pass and. be secured in place by the usual nuts. Sets of openings 14: are shown at each side of the shaft supported by such pillow-block, in order that the pillow block may be bolted down securely at both sides thereof. A suflicientnumber of holes should be provided to permit the ad-' justment of the roller 6 to the necessary positions for handling all the diiferentsizes of boxes intended to be compressed by the machine. It is obvious, of course, that other means may be employed for adjusting the position of the roller 6 with respect to the roller "4 and varying the width of the pass bet ween said rollers.

from above between the upper rollers 6 and T 4. the direction of feed being indicated by the arrow 11 in Fig. 2. After the boxes are caught by the sharp points'of the perforators carried by the upper rollers 6 and 7, these boxes will be fed positively into the pass between said rollers, and partially compressed, at. the same time being perforated throughout their area by the coarse perforators carried by said rollers. After being thus partially compressed. and perforated,

- some of them will fall in the direction incheated by the arrow 18 between or onto the rollers of the lower pair and will be caught by the rotating-perforat-ors CEII'IleBd by such rollers; while some of the boxes "so partially compressed will cling to the perforators of the upper rollers and will be carried along with such rollers in their rotation until they are near or beyond the vertical planes pass ing through the axes of the 'upper rollers, when they must positively be removed from the perforators of the upper rollers in order to prevent them from being carried back to the upper side of the pass between said rollers. Such boxes as cling to said perforators may be removed therefrom by suitable scrapers, such as the plates 15 arranged substantially tangentially to the rollers and extending the whole length of the same. These scrapers are fastened to the upper portion of the framework in any suitable manner, and preferably have V-shaped tooth-spaces substantially complementary in size and shape to the V-shaped or pyramidal perforators 12 of the upper rollers, and lying respectively in the planes of rotation of such pyramidal perforators carried by the upper rollers. These scrapers 15 scrape off the compressed and partially perforated boxes clinging to the perforators as such perforators with the boxes clinging thereto come adjacent to the scrapers, and cause such boxes to drop upon suitable guide-walls, such as 16, attached to the scrapers l5 and to the upper part of the framework, as for example by means of channel-irons 17 These slanting walls serve as guides to direct the falling partially compressed and perforated boxes to the entrance of the pass between the lower rollers, at the arrow 18,

between which rollers the boxes are fully be provided with suitable means for removing the boxes which may cling to the perforators carried thereby. The means employed may be scrapers 20 similar to those shown at 15 and operating in the same man ner, but having finer, that is, more closely spaced and smaller,,to0th-sp'aces lying in the planes of rotation of the respective pyramidal perforators carried by the lower rollers.

' Vhat I claim is:

1.- A machine for preparing tinned boxes and the like for detinning, comprising a pair of spaced compressing rolls, each roll having fixed pointed pro ections on its periphery extending radially therefrom, and means for preliminarily partially compressing the boxes to place them in condition to be readily gripped by said rolls, said means comprising a second pair of rolls'disposed above the first pair and spaced farther apart than said first-named rolls and also provided with pointed projections on their peripheries.

2. A machine for preparing tinned boxes and the like for detinning, comprising a pair'of spaced compressing rolls, each roll having fixed pointed projections on its periphery extending radially therefrom, means for preliminarily partially compressing the boxes to place them in condition to be readily gripped by said rolls, said means comprising a second pair of rolls disposed above the first pair and spaced farther apart than said first-named rolls and also provided with pointed projections on their peripheries, and

means to adjust the width of the space between said last-named rolls to accommodate boxes of different sizes.

3. A machine for preparing tinned boxes and the like for detinning, comprising a pair of spaced compressing rolls, each roll having fixed pointed projections on its periph-- ery extending radially therefrom, and means for preliminarily partially compressing the boxes to place them in condition to be readily gripped by said rolls, said means comprising a second pair of rolls disposed. above the first pair and spaced farther apart than said first-named rolls and also provided with pointed projections on their peripheries, but in less number and larger than those on the first-named pair, said lastnamed rolls being larger than the first and rotatable at a less rate of speed than said first-named rolls.

I11 witness whereof I have hereunto .set my hand in the presence of two witnesses.

HANS GOLDSCHMIDT. \Vitnesses:

ALFRED POHLMEYER, M. ENGELS. 

